Implement for imparting vibratory impacts.



PATBNTED NOV. 7, 1905.

v J.v H. CHAMP. IMPLEMENT FDR IMPARTING VIBRATORY IMPAGTS.

LPPLIOATIOHPILED JUNE 15. 1903.

UNITED sTATEs PATENT OFFICE.

JOSEPH H. CHAMP, OF CLEVELAND, OHIO.

Specication of Letters Patent.

Patented Nov. f7, V1905.

Application filed Tune 15, 1903. Serial No. 161,444.

T0 ir/ZZ la7/1,0m, t may concern.-

Be it known that I, JOSEPH H. CHAMP, a citizen of the United States, andaresident of Cleveland, county of Cuyahoga, and State of Ohio, haveinvented certain new and useful Improvements in Implements for ImpartingVibratory Impacts, of which the following is a specilication, theprinciple of the invention being herein explained and the best mode inwhich I have contemplated applying that principle so as to distinguishit from other inventions.

The annexed drawings and the following description set forth in detailone mechanical form embodying the invention, such detail constructionbeing but one of various mechanical forms in which the principle of theinvention may be used.

In said annexed drawings, Figure I represents a side view of my improvedimplement for imparting vibratory impacts; and Figs. II and III, axialsections of the cylinder and piston, illustrating the latter inpositionat the two extremes of its throw.

While the implement may be employed for various purposes where it isdesired to impart vibratory impact, the principal puri pose of theimplement is its employment for imparting vibratory motion to what maybe termed vibratodes -that is, pads or instruments adapted forapplication to the several portions of the body for imparting massage orsimilar motion to such portions of the body.

A cylinder 1 has a neck 2 of smaller diameter at one end and is closedby a cap 8 at the other end. The small-diameter neck is closed by ascrew-cap 4, having openings 5 and formed with a socket 6, into whichthe shank of the vibratode 7 fits. A neck 8 projects from the sideofthe/cylinder near the point where the latter merges into thesmall-diameter neck, and a handle 9 is screwed into said neck. Anopening 10 enters the chamber formed in the interior of the lateral neckand the end of the handle, and a nipple 11, preferably provided with acontrolling-valve 12 and secured in the end of a tube 13 for conveyingthe motive fluid, may iit into said hole. A long cylindrical plunger 14iits to reciprocate in the cylinder and has a neck 15 at one end, whichneck Ets to reciprocate in the neck of the cylinder. A permanentlyopeninlet-port 16 opens from the inlet-chamber into the neck end of thecylinder, so that the small annular end area of the plunger is underpermanent'pressure, forcing the plunger toward the closed end of thecylinder. The plunger has two annular circumferential channels 17 and18, and one, 17, of said channels has a radial channel 19 to the axis ofthe plunger where it communicates with an axial channel 20, extending tothe largearea end of the plunger. This circumferential channel registerswith an inlet-port 21 from the inlet-chamber when the plunger is at theextreme of its stroke toward the closed end of the cylinder, so thatmotive fluid may be conveyed to the closed end of the cylinder throughchannels 17, 19, and 20. The other circumferential channel of theplunger registers with an exhaust-port 22 in the cylinder when theplunger is at the other extreme of its throw on the stroke toward theneck end of the cylinder. This circumferential channel has a bentchannel 23 extending through the plunger to the largearea face of thesame, so that the motive iluid may exhaust through the channels 23 and1S and port 22 out into the atmosphere when the plunger reaches theextreme of its stroke toward the neck. The just-described positions ofthe plunger are respectively illustrated in Fig. III and Fig. II. As thecircumferential channels and their ports are comparatively small, theregistering of such channels and ports occupies a comparatively shortportion ofthe throw of the plunger, so that inlet and exhaust of motivefluid is quickly cut o' in the reciprocations of the plunger.

In practice when motive fluid, suoli as compressed air or other gaseousor aeriform liuid under pressure, is connected to the inlet of the tland we take the parts in the position of Fig. II, the motive fluid bearsconstantly against the small annular pressure area of the plunger andtends to force the same toward the closed end of the cylinder from whichat the present moment the motive fluid may escape, thereby allowing theplunger to move in that direction. The moment the plunger has moved thewidth of the exhaust channel and port the exhaust is cut oft' and theplunger moves against a cushion until the inletchannel of the plungercommunicates with the inlet-port, when motive iuid is admitted to thelarge-area face of the plunger and the live pressure against thelarge-area face of the plunger will overcome the same pressure againstthe small annular area of the same and drive the plunger in the oppositedirection.

IOO

IIO

rlhe plunger will thus reciprocate against a cushion of motive fluid atboth ends of the throw, and the rapid and cushioned .reciprocations ofthe plunger will vibrate the tool and the pad or instrument supported byit, imparting a vibratory impact to whatever such pad or instrument isapplied. Reciprocation of the plunger against iiuid cushions at bothends of the throw makes perfect vibration without hard shocks or jars.

Other modes of applying the principle of my invention may be employedfor the mode herein explained. Change may therefore be made as regardsthe mechanism thus disclosed, provided the principles of constructionset forth respectively in the following claims are employed.

l therefore particularly point out and distinctly claim as myinventionl. ln an implement for imparting vibratory impact, thecombination of a cylinder having closed ends and having apermanently-open inlet-port at one end, an inletport and anexhaust-port,and a plunger having a small-area end face exposed to thepermanently-open inlet-port and a large-area end face having an inletand an exhaust channel opening through it and formed with acircumferential inlet-channel and a circumferential exhaust-channelrespectively connected to said channels and respectively registeringwith the inlet-port and exhaust-port at opposite ends of its throw.

V2. ln an implement for imparting vibratory impact, the combination of acylinder having one end closed and formed at the other end with asmaller-diameter neck having openings in its end and a socket for theattachment of the vibration instrument and said cylinder having apermanently-open inlet-port at the neck end and an inlet-port and anexhaust-port, and a plunger having a neck at one end sliding in thecylinder-neck and a circumferential inlet-channel registering at one endof the throw with the inlet-port and communicating with a channelopening through the large-area face of the plunger and a circumferentialexhaust-channel registering at the other end of the throw with theexhaust-port and communicating with a channel opening through thelarge-area face of the plunger.

3. ln an implement for imparting vibratory impact, the combination of acylinder 1 having neck 2 and socket 6, and formed with a lateral neck 8and inlet-ports 16 and 21 and exhaust -port 22, a handle 9 in said neck,and a plunger 14 having a neck 15 and formed with a circumferentialinlet-channel 17 having channels 19 and 20 and a circumferentialexhaust-channel 18 having a channel 23.

ln testimony that l claim the foregoing to be my invention l havehereunto set my hand this 22d day of May, A. D. 1903.

JOSEPH H. CHAMP.

AYl/Vitnesses WM. SECHER, P. O. MATTHEWS.

